| /* |
| * Copyright 2000-2006 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| // |
| // Sets the default values for platform dependent flags used by the runtime system. |
| // (see globals.hpp) |
| // |
| |
| // For sparc we do not do call backs when a thread is in the interpreter, because the |
| // interpreter dispatch needs at least two instructions - first to load the dispatch address |
| // in a register, and second to jmp. The swapping of the dispatch table may occur _after_ |
| // the load of the dispatch address and hence the jmp would still go to the location |
| // according to the prior table. So, we let the thread continue and let it block by itself. |
| define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second |
| define_pd_global(bool, ConvertSleepToYield, false); // do not convert sleep(0) to yield. Helps GUI |
| define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress |
| define_pd_global(bool, CountInterpCalls, false); // not implemented in the interpreter |
| define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this |
| |
| define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks |
| define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast |
| |
| define_pd_global(intx, CodeEntryAlignment, 32); |
| define_pd_global(uintx, TLABSize, 0); |
| define_pd_global(uintx, NewSize, ScaleForWordSize((2048 * K) + (2 * (64 * K)))); |
| define_pd_global(intx, SurvivorRatio, 8); |
| define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC |
| #ifdef _LP64 |
| // Stack slots are 2X larger in LP64 than in the 32 bit VM. |
| define_pd_global(intx, ThreadStackSize, 1024); |
| define_pd_global(intx, VMThreadStackSize, 1024); |
| #else |
| define_pd_global(intx, ThreadStackSize, 512); |
| define_pd_global(intx, VMThreadStackSize, 512); |
| #endif |
| |
| define_pd_global(intx, StackYellowPages, 2); |
| define_pd_global(intx, StackRedPages, 1); |
| define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1)); |
| |
| define_pd_global(intx, PreInflateSpin, 40); // Determined by running design center |
| |
| define_pd_global(bool, RewriteBytecodes, true); |
| define_pd_global(bool, RewriteFrequentPairs, true); |
